Search for Catch2 with find_package() first

* And if not found, download it with the FetchContent module.
TartanLlama · Jun 17, 2023 · c94d06e · c94d06e
1 parent 3f0ca7b
commit c94d06e
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -67,9 +67,13 @@ if(EXPECTED_BUILD_TESTS)
   set(CATCH_INSTALL_HELPERS OFF)
   set(CATCH_BUILD_TESTING OFF)
   set(CATCH_INSTALL_DOCS OFF)
-  FetchContent_Declare(Catch2 URL
-    https://github.com/catchorg/Catch2/archive/v2.13.10.zip) 
-  FetchContent_MakeAvailable(Catch2)
+
+  find_package(Catch2)
+  if (NOT Catch2_FOUND)
+    FetchContent_Declare(Catch2 URL
+      https://github.com/catchorg/Catch2/archive/v2.13.10.zip)
+    FetchContent_MakeAvailable(Catch2)
+  endif()
 
   file(GLOB test-sources CONFIGURE_DEPENDS tests/*.cpp)
   list(FILTER test-sources EXCLUDE REGEX "tests/test.cpp")